A person on the computer hacking into a system

Penetration Testing

Tokyo Techies can audit your systems with a
penetration test, a simulated cyberattack on a system to spot and fix possible vulnerabilities.


Desktop software
Embedded devices
Mobile/Web Apps

Penetration Testing

Penetration Testing


Cross-site scripting
Access control issues
SQL Injection
Privilege extension
Cross-site request forgery
Problems related to file upload
CRLF injection
Problems caused by business logic
Path traversal
Buffer overflow
Session fixation
Format string attack
Weak password policy
Code injection
Incomplete password reset

Incident Response

Tokyo Techies offers complete support in cyber incident investigation, recovery, and prevention.

In the event of a cyber incident, Tokyo Techies offers complete support in investigating the breach, recovery of data, and building a proper incident response plan to prevent future incidents.
Hacked spelled out surrounded by binary
A person holding up a paper with a cloud shape cut out

Secure Cloud Infrastructure Design

Not sure how to construct a secure cloud infrastructure for a new service? Tokyo Techies can help analyze your new service’s specifications and design the right infrastructure that would meet the service requirements.

Tokyo Techies can also help to analyze your existing cloud system and build an action plan to reconstruct the system without breaking its existing behavior. We can also optimize the running cost/performance while enhancing the security level of the cloud.

Common Issues


Existing cloud infrastructure has security issues or requires hire running cost.
  • Analyzing the existing cloud infrastructure
  • Then build an action plan to reconstruct the system without breaking existing its behavior
  • Optimize the running cost/performance while enhancing the security level


You are not sure how to construct a scalable and secure infrastructure for a new service
  • Analyzing your new service’s specifications
  • Designing a secure infrastructure that meets your requirements
  • For instance:
    • Setup secure Development environment
    • Setup secure CI/CD pipeline
    • Reduce all possible attack surfaces right from design phase

Incident Response Process

Comprehensive Breach Investigation

Using the latest digital forensic techniques and reverse engineering, Tokyo Techies can identify the attack source, spread, and single out the systems and data affected in the breach.

Incident Reporting and Recovery

Based on a thorough investigation, our team can effectively communicate the effects of the breach and assist with short-term and long-term remedies,  to help you resume normal business operations.

Post-Incident Support

Based on the investigation results of the breach, we can help you prepare better to prevent any similar breaches in the future.

Penetration Testing

Bringing Security to Crypto Trading

A Cryptocurrency Exchange Platform
White-box Penetration Testing


The client developed a cryptocurrency exchange platform, with high liquidity as well as plenty of functional features. The Exchange supported both spot and leverage exchange, with a leverage ratio up to 200 times that of Bitmex. Specifically, its Circuit mode was also encrypted in the exchange, together with 2-layer and 3-layer security, hot wallet and cold wallet were made available to serve users’ diverse needs.

Tokyo Techies conducted a comprehensive penetration testing and code review of the client’s system (cloud infrastructure, web, mobile, and blockchain wallet system respectively) in just 14 days and identified all the possible holes that could make the system vulnerable to cyber attacks.

Technologies used

Screen showing a cryptocurrency exchange

SaaS Development

Bringing Japanese Logistics Towards
the Future

MeeTruck (SoftBank Group and Nippon Express Group)


Japanese logistics companies are still relying on legacy systems in their operations, resulting in long and inefficient workflows. To solve this problem, MeeTruck aims to build a nation-wide Transportation Management System (TMS). As their trusted IT partner, Tokyo Techies built a robust and scalable SaaS that is now being used by logistics companies all across Japan as part of digitalizing and simplifying their day-to-day processes.

Technologies used

Typescript logoAmazon web services logodatadog logoGolang logoTwilio logosalesforce logo

System Migration

Apartment Rental

Oyo Japan and KC Technologies
Technical Due Diligence


Oyo Japan decided to sell its apartment rental brand Oyo Life to KC Technologies. Tokyo Techies took charge in supporting both parties to evaluate the existing infrastructure of the property management platform, addressing all technical challenges, and developing a plan for system migration and maintenance.

Technologies used

Swift logoNode JS logoTwilio logo
Oyo Japan sells Oyo Life service to KC Technologies

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